CVE-2023-41104

MEDIUM
6.5
CVSS Score
Published: August 23, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 06:20 AM UTC
3 products affected across 2 vendorsVarnish EnterpriseVmod DigestLibvmod Digest

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

libvmod-digest before 1.0.3, as used in Varnish Enterprise 6.0.x before 6.0.11r5, has an out-of-bounds memory access during base64 decoding, leading to both authentication bypass and information disclosure; however, the exact attack surface will depend on the particular VCL (Varnish Configuration Language) configuration in use.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Affected range stops below 6.0.11, so it looks safe — our inference, not a vendor statement
v < 1.0.3
Affected range stops below 1.0.3, so it looks safe — our inference, not a vendor statement
v < 1.0.3varnish_enterprise_6.0x ≤ v < 6.0.11r5varnish_enterprise_6.0x
Affected range stops below 1.0.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.0.11r5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-119

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